CoroutineContext是一个集合,具体元素类型是Element,Element重载了操作符,可以通过+来形成集合。CoroutineContext是类似于Map的,每个Element有自己的Key,这是为了保证每个CoroutineContext对象中每个Key只能有一个Element对象。可以把CoroutineContext看成是Map,因此可以使用[]来获取Key对应的Element,如取Job,可以用context[Job]...
"Blue","Green")testFlow2=flowOf("fish","sky","tree","ball")CoroutineScope(Dispatchers.IO).launch{testFlow1.zip(testFlow2){firstWord,secondWord->"$firstWord $secondWord"}.collect{println("+++ $it +++")}}}// 输出结果://com.example.myapplication...
val e = Example() println(e.p) // 访问该属性,调用 getValue() 函数 e.p = "Runoob" // 调用 setValue() 函数 println(e.p) } 输出结果为: 代码语言:txt AI代码解释 Example@433c675d, 这里委托了 p 属性 Example@433c675d 的 p 属性赋值为 Runoob Example@433c675d, 这里委托了 p 属性 标...
// Inferred type: Map<String, Int> Map<String, Int>的泛型类型是从传递给Pair构造函数的参数的类型推断出来的。我们可能会想知道,如果用于创建map的推断类型的对不同会发生什么?第一对是Pair<String, Int>,第二对是Pair<String, String>: var map = mapOf("Mount Everest" to 8848, "K2" to "4017"...
var arrayOf = arrayOf("1", 1, 2, false) arrayOf.forEach { println(it) } 1. 2. 3. 下划线 _ 在lambda表达式中不需要使用这个参数的时候,可以使用_代替 fun main() { var mapOf = mapOf<String, Any>("1" to "2", "4" to false) ...
Map函数API Example: AI检测代码解析 fun getUpperFruits() { val list = listOf("Apple", "Banana", "Orange", "Pear", "Grape", "Watermelon") val newlist = list.map { it.toUpperCase() } for (fruit in newlist) { ...
We’re committed to providing a great IDE experience for Kotlin Multiplatform. That means not only investing in the core platform and, for example, migrating Kotlin IDE plugin to K2 compiler frontend, but also providing a single tool (Fleet) for all Kotlin Multiplatform targets and codebases whe...
com.example.fordemo I indexItemFor-index:1 indexItemFor-item:banana com.example.fordemo I indexItemFor-index:2 indexItemFor-item:orange kt提供的方式(java可能也有) /** * 同时获取对应角标(索引)和值,类似map吧 * */ fun indexItemFor(dataList: List<String>) { for ((index, item) in data...
* this scope fails and all the rest of the children are cancelled (for a different behavior see [supervisorScope]). * This function returns as soon as the given block and all its children coroutines are completed. * A usage example of a scope looks like this: ...
CoroutineContext是类似于Map的,每个Element有自己的Key,这是为了保证每个CoroutineContext对象中每个Key只能有一个Element对象。可以把CoroutineContext看成是Map,因此可以使用[]**来获取Key对应的Element,如取Job,可以用context[Job],取名字时可以用context[CoroutineName]等。